SMS M2- Blast Hole OMV Rotary Head Gearbox

SMS M1 Rotary Head Gearbox is the new Benchmark for Blast Hole Drilling. In the demanding environment of open-cast coal mines, equipment failure isn't just an inconvenience—it’s a massive hit to your bottom line. The SMS M3 Rotary Head Gearbox is specifically engineered for blast hole drilling rigs, providing the rugged reliability needed to penetrate hard rock overburden and coal seams day after day. Standard gearboxes often succumb to "stress cracking" due to the constant resonance of blast hole drilling. The SMS M1 housing is made from annealed steel casting. This heat-treatment process ensures the housing is tough enough to absorb high-frequency vibrations without structural fatigue, protecting your internal gear train. To manage the heavy axial and radial loads of 6-6.5"" hammers, we’ve implemented a four-bearing arrangement on the main spindle. This design minimises spindle "run-out" and ensures that shock loads are distributed across the assembly, significantly reducing wear on seals and gears. While others use machined bar stock, our 110mm spindle is fully forged. This provides a superior grain structure that can withstand the high torque and sudden "snatch" loads common when hitting hard rock pockets or fractured ground in mining pits.

• Product Details
• Technical Specification

Apllication	Domestic water well, Piling, Blast Hole Mining
Drilling Method	DTH/ Rotary/ Piling
Sense of Rotation	Opposite of Engine Shaft
Water well Maximum Depth	700m @165mm (6.5'')
Blast Hole Mining Depth	150 - 250 mm (5.9" - 9.8") Diameter 45m Depth
Spindle Diameter	110 mm
Hydraulic Motor	OMV series Motor
Gearbox Housing	MS Annealed, Graded CI (In House)
Center Bearing	Full Casted 4 Bearing Double Bearing Housing Driveline- Heavy Duty Tapper Roller (Timken/ Koyo/ FAG)
Attachment	Water swivel system @5000 PSI
Warranty	1 Year Warranty, 10 year Spare part backup

Gearbox Ratio	3:1 (Grounded Gears)- Smooth Drive 2:1 (Grounded Gears)- Smooth Drive
Max Output RPM	0- 200 Rpm (Varies on Hydraulic Motor selection)
Max Output Torque	upto 4000 Nm (Varies on Hydraulic Motor Selection)
Flushing Hole Diameter	40- 45 mm
Flushing Medium & Pressure Rating	Air or water @ 5000 PSI
Max pull up force withstanding capacity	10000 kgf
Max pull down force withstanding capacity	7000 kgf
Gearbox Weight	230 kg's without motor
Gearbox Oil	ISO VG-220